Compare phones
| Global Score | |
| 81 | 84.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 6.0 Marshmallow | Android 11, 10 |
| 2017-02-24 | 2020-03-23 |
| 6.41 x 3.18 x 0.27 inches | 6.26 x 2.96 x 0.35 inches |
| 6.63 ounces | 6.63 ounces |
| Black and Gold | Midnight blue and Raven black |
| Metal | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 6 inches | 6.4 inches |
| 1920 x 1080 pixels (Full HD) | 2340 x 1080 pixels |
| Super AMOLED | Super AMOLED |
| 367 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 7.8 | 8.4 |
| Performance | |
| Qualcomm Snapdragon 653 8976 Pro chipset | Exynos 9611 chipset |
| ARM Cortex-A72 and ARM Cortex-A53, 64-bit, 28 nm (Octa-Core 1950 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 6 GB RAM | 4 GB RAM |
| Adreno 510 GPU | Mali-G72 MP3 GPU |
| 9.09 | 9.27 |
| Storage | |
| 64 GB internal memory | 64 GB internal memory |
| microSDXC (up to 256 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 10.78 | 11.74 |
| Camera | |
| 16.00 MP + 16.00 MP | 48.00 MP + 20.00 MP |
| f/1.90 aperture | f/2.00 aperture |
| -- | 26.00mm focal length |
| -- | 0.5 inches (1/2") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| -- | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 9.24 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 4000mAh Li - Ion Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.92 | 7.52 |
| Other Features | |
| Bluetooth 4.2 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
Galaxy M21 is slightly better than the Galaxy C9 Pro, with an 84.1 score against 81. Both of these phones work with Android OS (operating system), but Galaxy M21 has the older 11 version while Galaxy C9 Pro has Android 6.0 Marshmallow version. The Galaxy M21 construction has the same weight than Galaxy C9 Pro, but it is way thicker.
The Samsung Galaxy M21 counts with a bit more vivid screen than Samsung Galaxy C9 Pro, because it has a just a little better pixel density, a slightly better 1080 x 2340 resolution and a little larger screen. Galaxy M21 counts with just a little better hardware performance than Samsung Galaxy C9 Pro, although it has a smaller amount of RAM memory, they both have a Octa-Core processing unit.
Samsung Galaxy M21 counts with a bit bigger memory capacity for applications and games than Galaxy C9 Pro, and although they both have exactly the same 64 GB internal storage, the Samsung Galaxy M21 also has an external memory card slot that holds a maximum of 512 GB. Samsung Galaxy M21 has a much longer battery performance than Galaxy C9 Pro, because it has a 6000mAh battery size against 4000mAh.
The Galaxy M21 captures much clearer pictures and videos than Samsung Galaxy C9 Pro, because although it has a smaller aperture, it also counts with a much better 3840x2160 video resolution and a much higher resolution camera.
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